Free Pony Tail Streamers Hair Bow Instructions: loopy bubble bows hairbows, free directions
I guess you could do without sewing (i.e using glue instead) but then again, you'd want it to be secured, ykwim? Hence the tad of sewing used.
Paid instruction: Etsy :: RooToo :: How to make our Ribbon Pony-O Streamers by the peaandroo boutique e-book
But, imho, it's sooo easy to make and you don't really need to buy one for this.